Quote:
Originally Posted by extrashaky
I think this is being made more complicated than it needs to be. If you know there's a leak, you already know that a pressure test is going to fail, because you have a leak. There's really no point in doing a pressure test when you can see the visual evidence of an active leak.
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A pressure test is to help you find the leak without having to get it to temperature to pressurize the system. It is harder to work on a hot engine and if you want to unhook a hose you will have to wait for it to cool all the way down. With a pressure tester you can pressurize/relieve as many times as you want without running the engine.
Quote:
Originally Posted by extrashaky
If you know you have a leak, the logical next step is to find the source of the leak. That involves a very special technique professionals call noggin pokin'. The way you do this is to poke your noggin in there and see with your own eyes what's happening. You already have a general idea of where the coolant is coming from, so you already know where to start pokin' your noggin.
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Are you going to stick your head down the front of a running FA20???
Oh wait what other way might you get the system pressurized other than running the engine?
Quote:
Originally Posted by extrashaky
The water pumps on most cars have a weep hole somewhere on the bottom side to allow coolant to escape when the water pump is failing. You'll probably have to look at it from underneath to see it, but you might also be able to get a mirror or inspection camera in there instead. That's where I would start. Even if it turns out not to be coming from the weep hole, you already need to poke your noggin in there to find that leak anyway.
Fix the obvious (the leak) first and see if that stops your overheating issue. If not, move on to the next potential cause.
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The weep hole on a water pump will tell you when the shaft bearing/seal is failing. It will not tell you if it is pumping.
You can use your cellphone as an inspection camera and you can stick it in places you probably wouldnt put your head.
There are even apps where you can use one phone as a wifi camera and another for the display. Like a wireless inspection camera.